Quickie...Re: Ordering Herbs from Pacific Botanicals..thoughts?

How much does a pound of each make? Like if I order a pound each of the Echinacea Angustifolia Root and the Echinacea Purpurea Root (assuming I am correct that this is what I need) from MR, how much tincture can I make with that in terms of let's say quarts? Is that a good base to start?

Forgive me, my brain potential when it comes to understanding measurements, just like when it comes to directions...is still a work in progress:)